CN104319195B - Oil bumper and the breaker operation mechanism using the oil bumper - Google Patents
Oil bumper and the breaker operation mechanism using the oil bumper Download PDFInfo
- Publication number
- CN104319195B CN104319195B CN201410296494.2A CN201410296494A CN104319195B CN 104319195 B CN104319195 B CN 104319195B CN 201410296494 A CN201410296494 A CN 201410296494A CN 104319195 B CN104319195 B CN 104319195B
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- piston
- inner casing
- radial direction
- cap
- aperture
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- 230000007246 mechanism Effects 0.000 title claims abstract description 52
- 230000000903 blocking effect Effects 0.000 claims abstract description 7
- 230000004323 axial length Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000013016 damping Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 69
- 239000010720 hydraulic oil Substances 0.000 description 22
- 230000003068 static effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
- H01H3/605—Mechanical arrangements for preventing or damping vibration or shock making use of a fluid damper
Abstract
The present invention relates to oil bumper and the breaker operation mechanism using the oil bumper, oil bumper includes inner casing, piston is equipped with the inner chamber of inner casing, piston rod is provided with piston, the periphery of inner casing is arranged with outer shell, it is interior, there is between outer shell annular gap, the inner chamber of inner casing is communicated with the cylinder body of inner casing with the front radial direction oil hole of annular gap and rear radial direction oil hole, piston is with the section that is slidably matched being slidably matched with piston rod guiding, the front limit structure and rear position limiting structure of the restricted piston movable limit are set on piston rod, before, spacing between position limiting structure is more than the axial length of the section that is slidably matched afterwards, the axial oilhole along the longitudinal direction through piston is provided with piston, it is provided with for blocking the piston cap in the front end aperture or rear end aperture of axial oilhole in the front side of piston or rear side on piston rod.The invention provides the oil bumper of different damping effect and the breaker operation mechanism using the oil bumper during a kind of achievable breaking-closing operating.
Description
Technical field
The present invention relates to field of circuit breakers, more particularly to oil bumper and the chopper actuating machine using the oil bumper
Structure.
Background technology
Oil bumper is a kind of safety guard that can slow down rigid collision in running, and it can extend punching
The action time of load is hit, the effect energy of shock loading is absorbed and convert.It is used for spring operating mechanism in primary cut-out
In addition to possessing protective effect, its damping characteristics can also affect the properties of product of chopper to oil bumper.Existing oil bumper
One kind oil as disclosed in Chinese patent CN201629279U " buffer unit of circuit breaker operating mechanism for accelerating initial speed " is slow
Rush device, the oil bumper includes the inner casing that axis extends along the longitudinal direction and is sheathed on the outer shell of inner casing periphery, inner casing, outer shell it
Between there is annular gap, being provided with for connecting before the inner chamber of inner casing and annular gap of time interval on the cylinder body of inner casing,
Oilhole afterwards, slidable fit is oriented in the inner chamber of inner casing piston, is provided with piston rod on piston, the rear end of piston be provided with for
The hinge hole of the circle that mechanism's output toggle arm is hinged and connected, the front end of the inner chamber of inner casing are provided with speed-raising spring.When in use, outer shell
Periphery be arranged with tripping spring, tripping spring seat is provided with piston rod.The course of work of the oil bumper is：Inner casing it is interior
Hydraulic oil is filled with annular gap between chamber and inside and outside cylinder, when the dynamic and static contact for needing chopper closes a floodgate, combined floodgate bullet
Spring releases energy, and the energy of switching-in spring passes to moving contact by corresponding drive mechanism makes moving contact move towards static contact,
Mechanism's output toggle arm of drive mechanism also drives piston rod to move forward simultaneously, and tripping spring starts energy storage, the liquid of pistons front sides
The rear side that premenstrual oilhole, annular gap and rear oilhole flow to piston is pressed oil, oil forms damping action in flow process, preferably
Dump energy is absorbed, after combined floodgate terminates, piston is pressed in speed-raising spring；When separating brake is needed, tripping spring releases energy,
Piston rod band piston is moved backwards, and power Jing mechanism's output toggle arms of tripping spring are transmitted to moving contact, and speed-raising spring can be with
Increase moving contact separating brake initial velocity, and piston backwards move during hydraulic oil oilhole, annular gap and front oil after
Hole flows to the front side of piston, and oil forms damping action in flow process.The problem of existing this oil bumper is：1、
The separating brake of dynamic and static contact, close a floodgate at the beginning of, piston just starts movement, oil motion generation damping action just to piston, thus shadow
The initial velocity of moving contact when sound has arrived separating brake, closed a floodgate, moving contact is easily damaged by electric arc, although the setting of speed-raising spring increases
Add the initial opening velocity of moving contact, can not but increase the combined floodgate initial velocity of moving contact, in addition the setting of speed-raising spring
So that the textural anomaly of oil bumper is complicated, the sealing problem at speed-raising spring end is also related to, oil bumper is considerably increased
Assembling difficulty and cost of manufacture；2nd, due in separating brake, making process, hydraulic oil to flow through path identical, cause oil bumper
The damping of generation is identical, and this is the actual condition for not meeting very much spring operating mechanism because and in real work,
Impact of the oil bumper to making process is the smaller the better because combined floodgate active force wish to be completely transferred on moving contact rather than
Absorbed by oil bumper, oil bumper is more the absorption to separating brake active force.
The content of the invention
It is an object of the invention to provide during a kind of achievable breaking-closing operating different damping effect oil bumper；This
Bright purpose also resides in a kind of breaker operation mechanism using the oil bumper of offer.
In order to solve the above problems, in the present invention, the technical scheme of oil bumper is：
Oil bumper, including the inner casing that axis extends along the longitudinal direction, slidable fit is oriented in the inner chamber of inner casing piston,
Piston rod is provided with piston, the periphery of inner casing is arranged with outer shell, there is annular gap, on the cylinder body of inner casing between inside and outside cylinder
It is communicated with the inner chamber of inner casing and the front radial direction oil hole of annular gap and rear radial direction oil hole, the piston is with being oriented to piston rod
The section that is slidably matched being slidably matched, arranges the front limit structure and rear spacing knot of the movable limit of restricted piston on piston rod
Structure, the spacing between forward and backward position limiting structure are provided with piston and are run through along the longitudinal direction more than the axial length of the section that is slidably matched
The axial oilhole of piston, on piston rod in the front side of piston or rear side be provided with for block axial oilhole front end aperture or after
The piston cap of stomidium mouth.
Piston cap is located at the rear side of piston, and the aperture of the rear radial direction oil hole is more than the aperture of front radial direction oil hole；Or it is living
Gag is located at the front side of piston, and the aperture of the rear radial direction oil hole is less than the aperture of front radial direction oil hole.
The piston includes the inner sleeve and overcoat that inside and outside coaxial line is arranged, and inner sleeve is sheathed on piston rod, and the slip is matched somebody with somebody
Close section to be made up of the inner sleeve, the internal chamber wall sealing of overcoat and inner casing is slidably matched, it is interior, between the front end of set or rear end by ring
Shape connecting plate connects, and the axial oilhole is arranged on the annular connecting plate.
The sorting hole that helps along the longitudinal direction through the piston cap is offered in the piston cap, it is described in the longitudinal direction
Sorting hole is helped mutually to stagger with the axial oilhole on piston.
In the present invention, the technical scheme of breaker operation mechanism is：
Breaker operation mechanism, including mechanism's output toggle arm and oil bumper, oil bumper include axis along the longitudinal direction
The inner casing of extension, slidable fit is oriented in the inner chamber of inner casing piston, and the work being connected with mechanism output toggle arm is provided with piston
Stopper rod, the periphery of cylinder are arranged with outer shell, have annular gap, the interior of inner casing is communicated with the cylinder body of inner casing between inside and outside cylinder
Chamber and the front radial direction oil hole and rear radial direction oil hole of annular gap, the piston are matched somebody with somebody with the slip being slidably matched with piston rod guiding
Section is closed, the front limit structure and rear position limiting structure of the movable limit of restricted piston, forward and backward position limiting structure are set on piston rod
Between spacing more than the axial length of section of being slidably matched, the axial oilhole along the longitudinal direction through piston is provided with piston,
It is provided with for blocking the piston cap in the front end aperture or rear end aperture of axial oilhole in the front side of piston or rear side on piston rod.
Piston cap is located at the rear side of piston, and the aperture of the rear radial direction oil hole is more than the aperture of front radial direction oil hole；Or it is living
Gag is located at the front side of piston, and the aperture of the rear radial direction oil hole is less than the aperture of front radial direction oil hole.
The piston includes the inner sleeve and overcoat that inside and outside coaxial line is arranged, and inner sleeve is sheathed on piston rod, and the slip is matched somebody with somebody
Close section to be made up of the inner sleeve, the internal chamber wall sealing of overcoat and inner casing is slidably matched, it is interior, between the front end of set or rear end by ring
Shape connecting plate connects, and the axial oilhole is arranged on the annular connecting plate.
The sorting hole that helps along the longitudinal direction through the piston cap is offered in the piston cap, it is described in the longitudinal direction
Sorting hole is helped mutually to stagger with the axial oilhole on piston.
Beneficial effects of the present invention are：Hydraulic oil is filled in the inner chamber of inner casing and annular gap during use, if closed a floodgate
When mechanism output toggle arm drive piston rod to move backwards, then piston cap is arranged at the rear side of piston（If switch on opportunity structure is defeated
Going out connecting lever drives piston rod to move forward, then piston cap is arranged at the front side of piston）, when dynamic and static contact closes a floodgate, piston rod
Band piston is moved backwards, is departed from piston by hydraulic oil or effect of inertia piston cap, and the hydraulic oil on rear side of piston is through two
Route flows to pistons front sides, and a route is rear radial direction oil hole, annular gap and front radial direction oil hole, and another route is on piston
Axial oilhole, as the circulation area of hydraulic oil is big, therefore buffer is just little to the damping action of mechanism's output toggle arm, and this is just
Reduce the power of influence that antivibrator in making process is moved to moving contact；In dynamic and static contact separating brake, piston rod band piston court
Front movement, piston are close to piston cap, and axial oilhole is blocked by piston, and hydraulic oil can only premenstrual radial direction oil hole, annular gap
This route is flowed on rear side of piston with rear radial direction oil hole, and the circulation area of hydraulic oil is little, and buffer is to mechanism's output toggle arm
Damping action is larger, so as to realize dampings different during breaking-closing operating.
Description of the drawings
Fig. 1 is the structural representation of one embodiment of buffer in the present invention；
Fig. 2 is the structural representation of Fig. 1 center taps；
Fig. 3 is the structural representation of inner casing in Fig. 1；
Fig. 4 is the structural representation of piston cap in Fig. 1；
Fig. 5 is the front view of Fig. 4；
Fig. 6 is the structural representation of piston in Fig. 1；
Fig. 7 is the front view of Fig. 6；
Fig. 8 is the cooperation schematic diagram of piston and piston cap in making process；
Fig. 9 is the cooperation schematic diagram of piston and piston cap during separating brake.
Specific embodiment
The enforcement of breaker operation mechanism is for example shown in Fig. 1 ~ 9：This breaker operation mechanism is a spring operating mechanism,
Spring operating mechanism includes switching-in spring, tripping spring and oil bumper, and switching-in spring passes through drive mechanism and corresponding moving contact
It is connected, drive mechanism includes power output shaft and the mechanism's output toggle arm being arranged on power output shaft, mechanism's output is turned
Arm is connected with tripping spring and oil bumper, and drive mechanism belongs to prior art, and its concrete structure is no longer described in detail.Oil bumper bag
Include inner casing 3 that axis extends along the longitudinal direction and coaxial line is sheathed on the outer shell 1 of inner casing periphery, there is between inside and outside cylinder annular
Gap, is communicated with the inner chamber of inner casing 3 and the front radial direction oil hole 18 of annular gap and rear radial direction oil hole 16 on the cylinder body of inner casing, this
In embodiment when switching-in spring releases energy, piston rod is moved backwards, and the aperture of rear radial direction oil hole 16 is more than front radial direction oil hole
18 aperture.Slidable fit is oriented in the inner chamber of inner casing piston 5, and piston rod is provided with piston, and piston rod includes and piston
The connected body of rod 13 and the joint 14 of body of rod rear end is assemblied in, on joint 14, is provided with hinge hole 15, hinge hole is length along front
The elongated hole that rear direction extends, is provided with the bearing pin being arranged in hinge hole on mechanism's output toggle arm（Not shown in figure）.Piston bag
Include inner sleeve 5-2 and overcoat 5-3 that inside and outside coaxial line is arranged, inner sleeve 5-2 is oriented to slip cap on piston rod, inner sleeve constitute with
Piston rod is oriented to the section that is slidably matched being slidably matched, and overcoat is slidably matched with the internal chamber wall sealing of inner casing, is provided with piston rod
The front limit structure and rear position limiting structure of the movable limit of piston are limited, the spacing between forward and backward position limiting structure is more than slip
The axial length of section, forward and backward position limiting structure is coordinated to be made up of the back-up ring 4 and snap ring 6 that assemble on the piston rod respectively.It is interior, set
By annular connecting plate 5-1 connections between rear end, the axial oilhole along the longitudinal direction through annular connecting plate on annular connecting plate, is provided with
17, axial oilhole includes four mounting holes being arranged circumferentially around annular connecting plate, is provided with piston rod on rear side of piston
For blocking the piston cap 7 in the rear end aperture of axial oilhole 17, helping through piston cap along the longitudinal direction in piston cap, is offered
Sorting hole 19, described in the longitudinal direction to help sorting hole mutually to stagger with the axial oilhole on piston, the rear end of piston cap is arranged
There is chamfering structure 20.Figure middle term 12 is represented prevents piston, piston cap by the capping deviate from inner casing；Item 10 represents and capping 12 is entered
The spacing snap ring of row；Item 8,9,11 represents sealing ring；Item 3 represents hydraulic oil.
The course of work of this breaker operation mechanism is：In corresponding dynamic and static contact separating brake, before bearing pin is located at hinge hole
End, when needing dynamic and static contact to close a floodgate, switching-in spring releases energy, and the power Jing drive mechanisms of switching-in spring are transmitted to moving contact,
Mechanism's output toggle arm drives bearing pin to move backwards, as hinge hole is the elongated hole that a length extends along the longitudinal direction, therefore
At the beginning of combined floodgate, piston rod is not moved rearwards by, and oil bumper does not produce damping action to mechanism's output toggle arm, it is ensured that moving contact
Combined floodgate initial velocity, move to the rear end of hinge hole with rear pin shaft, piston rod starts band piston and moves backwards, hydraulic oil Jing
Help sorting hole enter between piston cap and piston, it is ensured that piston cap is smoothly detached with piston, the axial oilhole on piston not by
Piston cap is blocked, and the hydraulic oil Jing two lines road on rear side of piston flows to pistons front sides, and circuit is the axial oilhole on piston,
Another circuit is rear radial direction oil hole, annular gap and front radial direction oil hole, and two lines road ensure that the circulation area of hydraulic oil, subtract
The little damping of hydraulic oil, and then damping of the oil bumper to mechanism's output toggle arm is reduced, reduce oily buffering
Impact of the device to switch on of moving contact process, and as the aperture of rear radial direction oil hole is more than the aperture of front radial direction oil hole, can so enter
The through-current capability of the raising hydraulic oil of one step, the further damping for reducing hydraulic oil；When the dynamic and static contact separating brake of needs
When, tripping spring releases energy, and power Jing mechanism's output toggle arms of tripping spring and power output shaft pass to moving contact, mechanism
Output toggle arm drives bearing pin to move forward, and as hinge hole is an elongated hole, therefore at the beginning of separating brake, piston rod is not towards reach
Dynamic, oil bumper does not produce damping action to mechanism's output toggle arm, it is ensured that the separating brake initial velocity of moving contact, transports with rear pin shaft
The front end of hinge hole is moved, piston rod band piston is moved forward, and the rear end of piston and the front end of piston cap are acted on by hydraulic oil
It is close to, the axial oilhole on piston is blocked by piston cap, and the hydraulic oil of pistons front sides can only be by front radial direction oil hole, annular gap
This circuit is flowed on rear side of piston with rear radial direction oil hole, and the circulation area of hydraulic oil is little, and the damping force of hydraulic oil is big, it is ensured that
Damping of the oil bumper to mechanism's output toggle arm, and as the aperture of front radial direction oil hole is less than the aperture of rear radial direction oil hole,
The damping force of hydraulic oil is increased further.Piston is made up of inside and outside set and the annular connecting plate being arranged between inside and outside set,
The weight of piston can so be reduced, the cost of manufacture of oil bumper can be reduced.
In the other embodiments of this breaker operation mechanism：The breaker operation mechanism can also be hydraulic actuating mechanism
Or electromagnetic operating mechanism, hydraulic actuating mechanism or electromagnetic operating mechanism belong to prior art, and its concrete structure is no longer situated between in detail
Continue；If when closing a floodgate, mechanism's output toggle arm drives piston rod to move forward, then annular connecting plate will be arranged inside and outside set
Front end, piston cap to be arranged at the front side of piston, and the aperture of front radial direction oil hole is greater than the aperture of rear radial direction oil hole；Certain piston
Solid piston is can also be, now axial oilhole is through the front and rear end of solid piston；The sorting hole that helps in piston cap can also
Do not set, now piston cap can be made to be smoothly detached with piston by the hydraulic oil liquid in piston cap peripheral clearance；Forward and backward spacing knot
Structure can also be stop nut；The aperture of forward and backward radial direction oil hole can also be consistent；The body of rod and joint of piston rod can also one
Molding.
The enforcement of oil bumper is for example shown in Fig. 1 ~ 9：The concrete structure of buffer and above-mentioned each breaker operation mechanism reality
The oil bumper applied described in example is identical, will not be described in detail herein.
Claims (6)
1. the inner casing that oil bumper, including axis extends along the longitudinal direction, slidable fit is oriented in the inner chamber of inner casing piston, living
Piston rod is provided with beyond the Great Wall, the periphery of inner casing is arranged with outer shell, there is between inside and outside cylinder annular gap, set on the cylinder body of inner casing
There are the inner chamber of connection inner casing and the front radial direction oil hole and rear radial direction oil hole of annular gap, it is characterised in that：The piston with
Piston rod is oriented to the section that is slidably matched being slidably matched, and the front limit structure of the movable limit of restricted piston is arranged on piston rod
With rear position limiting structure, the spacing between forward and backward position limiting structure is provided with along front on piston more than the axial length of section of being slidably matched
Axial oilhole of the rear direction through piston, is provided with piston rod on front side of piston for blocking the front end aperture of axial oilhole
Piston cap, or be provided with rear side of piston on piston rod for blocking the piston cap in the rear end aperture of axial oilhole, make
Used time, in making process, piston cap is departed from piston, and during separating brake, piston cap is close to piston；The piston includes
Inner sleeve and overcoat that inside and outside coaxial line is arranged, inner sleeve are sheathed on piston rod, and the section that is slidably matched is made up of the inner sleeve, outward
Set is slidably matched with the internal chamber wall sealing of inner casing, by annular connecting plate connection, the axle between inner sleeve, the front end of overcoat or rear end
It is arranged on the annular connecting plate to oilhole.
2. oil bumper according to claim 1, it is characterised in that：Piston cap is located at the rear side of piston, the rear radial direction
Aperture of the aperture of oilhole more than front radial direction oil hole；Or piston cap is located at the front side of piston, the aperture of the rear radial direction oil hole
Less than the aperture of front radial direction oil hole.
3. oil bumper according to claim 1 and 2, it is characterised in that：Offer along the longitudinal direction in the piston cap
It is through the sorting hole that helps of the piston cap, described in the longitudinal direction to help sorting hole mutually to stagger with the axial oilhole on piston.
4. breaker operation mechanism, including mechanism output toggle arm and oil bumper, oil bumper include that axis prolongs along the longitudinal direction
The inner casing stretched, slidable fit is oriented in the inner chamber of inner casing piston, and the piston being connected with mechanism output toggle arm is provided with piston
Bar, the periphery of inner casing are arranged with outer shell, have annular gap, the interior of inner casing is communicated with the cylinder body of inner casing between inside and outside cylinder
Chamber and the front radial direction oil hole and rear radial direction oil hole of annular gap, it is characterised in that：The piston is oriented to slip with piston rod
The section that is slidably matched for coordinating, arranges the front limit structure and rear position limiting structure of the movable limit of restricted piston on piston rod,
Axial length of the spacing between forward and backward position limiting structure more than the section that is slidably matched, is provided with piston along the longitudinal direction through work
The axial oilhole of plug, is provided with piston rod on front side of piston for blocking the piston cap in the front end aperture of axial oilhole, or
It is provided with rear side of piston on person's piston rod for blocking the piston cap in the rear end aperture of axial oilhole, during use, is closing a floodgate
During, piston cap is departed from piston, and during separating brake, piston cap is close to piston；The piston includes inside and outside coaxial line
The inner sleeve being arranged and overcoat, inner sleeve are sheathed on piston rod, and the section that is slidably matched is made up of the inner sleeve, overcoat and inner casing
Internal chamber wall sealing is slidably matched, and by annular connecting plate connection between inner sleeve, the front end of overcoat or rear end, the axial oilhole is arranged
On the annular connecting plate.
5. breaker operation mechanism according to claim 4, it is characterised in that：Piston cap is located at the rear side of piston, described
The aperture of radial direction oil hole is more than the aperture of front radial direction oil hole afterwards；Or piston cap is located at the front side of piston, the rear radial direction oil hole
Aperture less than front radial direction oil hole aperture.
6. the breaker operation mechanism according to claim 4 or 5, it is characterised in that：Offer along front in the piston cap
Rear direction helps sorting hole through the piston cap, described in the longitudinal direction to help sorting hole mutual with the axial oilhole on piston
Stagger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410296494.2A CN104319195B (en) | 2014-06-27 | 2014-06-27 | Oil bumper and the breaker operation mechanism using the oil bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410296494.2A CN104319195B (en) | 2014-06-27 | 2014-06-27 | Oil bumper and the breaker operation mechanism using the oil bumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104319195A CN104319195A (en) | 2015-01-28 |
| CN104319195B true CN104319195B (en) | 2017-04-05 |
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ID=52374411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410296494.2A Active CN104319195B (en) | 2014-06-27 | 2014-06-27 | Oil bumper and the breaker operation mechanism using the oil bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104319195B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119282B (en) * | 2017-06-22 | 2021-05-28 | 河南平芝高压开关有限公司 | Contact collision buffer device and sulfur hexafluoride breaker using same |
| CN111192770B (en) * | 2019-12-20 | 2022-06-14 | 平高集团有限公司 | Spring operating mechanism and opening and closing buffer device thereof |
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| CN2608759Y (en) * | 2003-03-10 | 2004-03-31 | 沈阳市长城液压机械厂 | Hydraulic shock absorber |
| DE10245404A1 (en) * | 2002-09-28 | 2004-04-08 | Gkn Sinter Metals Gmbh | Piston body for piston-cylinder-units, esp. shock absorber piston has sintered powder-metallurgic body with integrated projecting and support webs |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201059118Y (en) * | 2007-05-17 | 2008-05-14 | 伍志勇 | Furniture door deoscillator |
| CN201221584Y (en) * | 2008-07-09 | 2009-04-15 | 天津迅达减震器有限公司 | Double-drum type vibration damper capable of improving additional compression resistance |
| CN201241931Y (en) * | 2008-06-26 | 2009-05-20 | 广州栢乐特汽车材料制造有限公司 | Work oil circulation type oil pressure buffer |
| CN202930262U (en) * | 2012-11-15 | 2013-05-08 | 山东泰开高压开关有限公司 | Switching on and off integrated type oil buffer |
| CN203604531U (en) * | 2013-12-17 | 2014-05-21 | 湖南科技大学 | Adjustable viscous damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2138495B1 (en) * | 1996-07-22 | 2000-08-16 | Aleaciones De Metales Sinteriz | PISTON STRUCTURE FOR IMPACT SHOCK ABSORBER. |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10245404A1 (en) * | 2002-09-28 | 2004-04-08 | Gkn Sinter Metals Gmbh | Piston body for piston-cylinder-units, esp. shock absorber piston has sintered powder-metallurgic body with integrated projecting and support webs |
| CN2608759Y (en) * | 2003-03-10 | 2004-03-31 | 沈阳市长城液压机械厂 | Hydraulic shock absorber |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201059118Y (en) * | 2007-05-17 | 2008-05-14 | 伍志勇 | Furniture door deoscillator |
| CN201241931Y (en) * | 2008-06-26 | 2009-05-20 | 广州栢乐特汽车材料制造有限公司 | Work oil circulation type oil pressure buffer |
| CN201221584Y (en) * | 2008-07-09 | 2009-04-15 | 天津迅达减震器有限公司 | Double-drum type vibration damper capable of improving additional compression resistance |
| CN202930262U (en) * | 2012-11-15 | 2013-05-08 | 山东泰开高压开关有限公司 | Switching on and off integrated type oil buffer |
| CN203604531U (en) * | 2013-12-17 | 2014-05-21 | 湖南科技大学 | Adjustable viscous damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104319195A (en) | 2015-01-28 |
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